I’m trying to create a Dual List Box using only vanilla Javascript, no JQuery or JS packages, for learning purposes. When a user double-clicks an Option, that Option appends to the other parent Select (boxB) and is removed from the original parent Select (boxA), and vice versa. The Option elements have …
how do path at the final url like this “~” [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 10 months ago. Improve this question what is code “~” from the end of this url ? udel.edu/~, and what mean ? Answer…
Selecting an specific attribute from useState
With a React Class component i have the following state object as an example: when i want to make a function that gets an specific attribute from the state i can simply use Is there something equivalent when i use Hooks? Because i would have to write this Answer You can simply write your both arrays into one …
Why do extended classes uses prototypes for methods but not for fields?
Looking at this simple code : Result in Chrome is : As we can see, the instance methods are on the prototype (for each constructor function) Question: Why are fields, as opposed to methods, not on the prototype? I mean , someField is in Animal not in Lion. Answer This is the intended behavior as seen in ECMAS…
how to use filter on array of objects in javascript
I want to filter my result in javascript. I want to filter data and remove those id’s found in ids. This is what I have tried so far But it returns I want to remove id 2 & ‘3’ from data but it only remove id 2.Hope You understand my issue. Answer No need to use reduce. A simple filter
How to run npm start without opening browser for react development on linux
I am learning react and find myself running npm start on the terminal a couple of times but its annoying how it opens a new browser window everytime. I’m trying to stop this from happening on linux. I found a solution for how to do this on Windows, but how can I do it on Linux? Answer Adding BROWSER=non…
Validation issues in JavaScript
The following function is supposed to check two inputs: name and message. I’m not sure what is wrong here but I’m trying to first see if the input is empty if it’s not I want to then check it with a regular expression. The message I just want to see if it is empty or not. If either are empty
How to perform regular expressions on a Speech Recognition transcript?
Summary of my application: Input: Have the user speak to the computer (ask the computer “What is your name?”) ✅ Perform a regular expression on the ‘transcript’ result (from webkitSpeechRecognition) ❌ Output: console.log(“My name is Harry Johnson”). ❌ I’m trying to pe…
Uncaught TypeError: Cannot destructure property ‘xxx’ of ‘useAuth(…)’ as it is undefined
Working with React Context and Hooks I am creating a provider called AuthProvider and from the useAuth Hook I call that context to work with it. I have a component called Login in which I call my Hook to access the AuthProvider as follows: In AuthContext I have the variable “hello” that I pass to …
How do I use localStorage to remember a user’s name
This code has been checked for errors and none were detected. But, when it runs, it alerts null. For Sololearners my code bit: https://code.sololearn.com/WOv1cF0EewdB/?ref=app Why is this?* *jQuery answers are OK Answer You are not getting a hello alert is because you are checking getItem’s return value…